The long-running mystery of methane on Mars has now been joined by another perplexing enigma - oxygen.
A conspiracy theorist who had been filming a plane's vapor trail also managed to pick up a strange object in the sky.
Dating back 40,000 years, the necklace may have been the last of its kind ever made by the Neanderthals.
An anti-witchcraft potion dating back 150 years has been discovered in a pub in Northamptonshire, England.
A vast repository of manuscripts dating back over a thousand years has been officially renamed by the Pope.
The US military's notoriously secretive miniature space shuttle is back and nobody knows what it has been up to.
A family who had been out grouse hunting in Canada recently recorded some truly blood-curdling sounds.
A World War 2-era ventriloquist doll has been filmed moving its eyes and mouth in the middle of the night.
A family in the Netherlands has been rescued after being kept in a secret room waiting for the end of the world.
A man has been arrested after using a disturbingly simple yet effective way to track down a pop star's home.
A gigantic record-breaking version of the infamous spirit board has been set up on the historic Salem Common.
A previously unknown species of microscopic creature has been discovered perfectly preserved in amber.
New Zealand's Department of Internal Affairs has been plagued by reports of ghosts, according to internal files.
Authorities investigating a spate of mystery bird deaths have been unable to come up with an explanation.
A book about ghosts and hauntings has been repeatedly swiped from libraries across Buncombe County.
A new coin has been released to mark the anniversary of one of Canada's most enduring UFO mysteries.
Scientists have been struggling to explain a series of fires sparked by an object that fell over Chile recently.
Police have been investigating the case of a real-life Pennywise who has been menacing a mother and son.
William Guy had been traveling on a ferry off North Carolina when he spotted a cluster of strange lights.
An Arkansas teenager had been driving on Monday night when he came across a rather unnerving spectacle.